| /* |
| * Copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at> |
| * Copyright (c) 2013 Clément Bœsch <u pkh me> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with FFmpeg; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| /** |
| * @todo try to change to int |
| * @todo try lifting based implementation |
| * @todo optimize optimize optimize |
| * @todo hard thresholding |
| * @todo use QP to decide filter strength |
| * @todo wavelet normalization / least squares optimal signal vs. noise thresholds |
| */ |
| |
| #include "libavutil/imgutils.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/mem_internal.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "internal.h" |
| |
| typedef struct OWDenoiseContext { |
| const AVClass *class; |
| double luma_strength; |
| double chroma_strength; |
| int depth; |
| float *plane[16+1][4]; |
| int linesize; |
| int hsub, vsub; |
| int pixel_depth; |
| } OWDenoiseContext; |
| |
| #define OFFSET(x) offsetof(OWDenoiseContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| static const AVOption owdenoise_options[] = { |
| { "depth", "set depth", OFFSET(depth), AV_OPT_TYPE_INT, {.i64 = 8}, 8, 16, FLAGS }, |
| { "luma_strength", "set luma strength", OFFSET(luma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS }, |
| { "ls", "set luma strength", OFFSET(luma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS }, |
| { "chroma_strength", "set chroma strength", OFFSET(chroma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS }, |
| { "cs", "set chroma strength", OFFSET(chroma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS }, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(owdenoise); |
| |
| DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = { |
| { 0, 48, 12, 60, 3, 51, 15, 63 }, |
| { 32, 16, 44, 28, 35, 19, 47, 31 }, |
| { 8, 56, 4, 52, 11, 59, 7, 55 }, |
| { 40, 24, 36, 20, 43, 27, 39, 23 }, |
| { 2, 50, 14, 62, 1, 49, 13, 61 }, |
| { 34, 18, 46, 30, 33, 17, 45, 29 }, |
| { 10, 58, 6, 54, 9, 57, 5, 53 }, |
| { 42, 26, 38, 22, 41, 25, 37, 21 }, |
| }; |
| |
| static const double coeff[2][5] = { |
| { |
| 0.6029490182363579 * M_SQRT2, |
| 0.2668641184428723 * M_SQRT2, |
| -0.07822326652898785 * M_SQRT2, |
| -0.01686411844287495 * M_SQRT2, |
| 0.02674875741080976 * M_SQRT2, |
| },{ |
| 1.115087052456994 / M_SQRT2, |
| -0.5912717631142470 / M_SQRT2, |
| -0.05754352622849957 / M_SQRT2, |
| 0.09127176311424948 / M_SQRT2, |
| } |
| }; |
| |
| static const double icoeff[2][5] = { |
| { |
| 1.115087052456994 / M_SQRT2, |
| 0.5912717631142470 / M_SQRT2, |
| -0.05754352622849957 / M_SQRT2, |
| -0.09127176311424948 / M_SQRT2, |
| },{ |
| 0.6029490182363579 * M_SQRT2, |
| -0.2668641184428723 * M_SQRT2, |
| -0.07822326652898785 * M_SQRT2, |
| 0.01686411844287495 * M_SQRT2, |
| 0.02674875741080976 * M_SQRT2, |
| } |
| }; |
| |
| |
| static inline void decompose(float *dst_l, float *dst_h, const float *src, |
| int linesize, int w) |
| { |
| int x, i; |
| for (x = 0; x < w; x++) { |
| double sum_l = src[x * linesize] * coeff[0][0]; |
| double sum_h = src[x * linesize] * coeff[1][0]; |
| for (i = 1; i <= 4; i++) { |
| const double s = src[avpriv_mirror(x - i, w - 1) * linesize] |
| + src[avpriv_mirror(x + i, w - 1) * linesize]; |
| |
| sum_l += coeff[0][i] * s; |
| sum_h += coeff[1][i] * s; |
| } |
| dst_l[x * linesize] = sum_l; |
| dst_h[x * linesize] = sum_h; |
| } |
| } |
| |
| static inline void compose(float *dst, const float *src_l, const float *src_h, |
| int linesize, int w) |
| { |
| int x, i; |
| for (x = 0; x < w; x++) { |
| double sum_l = src_l[x * linesize] * icoeff[0][0]; |
| double sum_h = src_h[x * linesize] * icoeff[1][0]; |
| for (i = 1; i <= 4; i++) { |
| const int x0 = avpriv_mirror(x - i, w - 1) * linesize; |
| const int x1 = avpriv_mirror(x + i, w - 1) * linesize; |
| |
| sum_l += icoeff[0][i] * (src_l[x0] + src_l[x1]); |
| sum_h += icoeff[1][i] * (src_h[x0] + src_h[x1]); |
| } |
| dst[x * linesize] = (sum_l + sum_h) * 0.5; |
| } |
| } |
| |
| static inline void decompose2D(float *dst_l, float *dst_h, const float *src, |
| int xlinesize, int ylinesize, |
| int step, int w, int h) |
| { |
| int y, x; |
| for (y = 0; y < h; y++) |
| for (x = 0; x < step; x++) |
| decompose(dst_l + ylinesize*y + xlinesize*x, |
| dst_h + ylinesize*y + xlinesize*x, |
| src + ylinesize*y + xlinesize*x, |
| step * xlinesize, (w - x + step - 1) / step); |
| } |
| |
| static inline void compose2D(float *dst, const float *src_l, const float *src_h, |
| int xlinesize, int ylinesize, |
| int step, int w, int h) |
| { |
| int y, x; |
| for (y = 0; y < h; y++) |
| for (x = 0; x < step; x++) |
| compose(dst + ylinesize*y + xlinesize*x, |
| src_l + ylinesize*y + xlinesize*x, |
| src_h + ylinesize*y + xlinesize*x, |
| step * xlinesize, (w - x + step - 1) / step); |
| } |
| |
| static void decompose2D2(float *dst[4], float *src, float *temp[2], |
| int linesize, int step, int w, int h) |
| { |
| decompose2D(temp[0], temp[1], src, 1, linesize, step, w, h); |
| decompose2D( dst[0], dst[1], temp[0], linesize, 1, step, h, w); |
| decompose2D( dst[2], dst[3], temp[1], linesize, 1, step, h, w); |
| } |
| |
| static void compose2D2(float *dst, float *src[4], float *temp[2], |
| int linesize, int step, int w, int h) |
| { |
| compose2D(temp[0], src[0], src[1], linesize, 1, step, h, w); |
| compose2D(temp[1], src[2], src[3], linesize, 1, step, h, w); |
| compose2D(dst, temp[0], temp[1], 1, linesize, step, w, h); |
| } |
| |
| static void filter(OWDenoiseContext *s, |
| uint8_t *dst, int dst_linesize, |
| const uint8_t *src, int src_linesize, |
| int width, int height, double strength) |
| { |
| int x, y, i, j, depth = s->depth; |
| |
| while (1<<depth > width || 1<<depth > height) |
| depth--; |
| |
| if (s->pixel_depth <= 8) { |
| for (y = 0; y < height; y++) |
| for(x = 0; x < width; x++) |
| s->plane[0][0][y*s->linesize + x] = src[y*src_linesize + x]; |
| } else { |
| const uint16_t *src16 = (const uint16_t *)src; |
| |
| src_linesize /= 2; |
| for (y = 0; y < height; y++) |
| for(x = 0; x < width; x++) |
| s->plane[0][0][y*s->linesize + x] = src16[y*src_linesize + x]; |
| } |
| |
| for (i = 0; i < depth; i++) |
| decompose2D2(s->plane[i + 1], s->plane[i][0], s->plane[0] + 1, s->linesize, 1<<i, width, height); |
| |
| for (i = 0; i < depth; i++) { |
| for (j = 1; j < 4; j++) { |
| for (y = 0; y < height; y++) { |
| for (x = 0; x < width; x++) { |
| double v = s->plane[i + 1][j][y*s->linesize + x]; |
| if (v > strength) v -= strength; |
| else if (v < -strength) v += strength; |
| else v = 0; |
| s->plane[i + 1][j][x + y*s->linesize] = v; |
| } |
| } |
| } |
| } |
| for (i = depth-1; i >= 0; i--) |
| compose2D2(s->plane[i][0], s->plane[i + 1], s->plane[0] + 1, s->linesize, 1<<i, width, height); |
| |
| if (s->pixel_depth <= 8) { |
| for (y = 0; y < height; y++) { |
| for (x = 0; x < width; x++) { |
| i = s->plane[0][0][y*s->linesize + x] + dither[x&7][y&7]*(1.0/64) + 1.0/128; // yes the rounding is insane but optimal :) |
| if ((unsigned)i > 255U) i = ~(i >> 31); |
| dst[y*dst_linesize + x] = i; |
| } |
| } |
| } else { |
| uint16_t *dst16 = (uint16_t *)dst; |
| |
| dst_linesize /= 2; |
| for (y = 0; y < height; y++) { |
| for (x = 0; x < width; x++) { |
| i = s->plane[0][0][y*s->linesize + x]; |
| dst16[y*dst_linesize + x] = i; |
| } |
| } |
| } |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| OWDenoiseContext *s = ctx->priv; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| AVFrame *out; |
| const int cw = AV_CEIL_RSHIFT(inlink->w, s->hsub); |
| const int ch = AV_CEIL_RSHIFT(inlink->h, s->vsub); |
| |
| if (av_frame_is_writable(in)) { |
| out = in; |
| |
| if (s->luma_strength > 0) |
| filter(s, out->data[0], out->linesize[0], in->data[0], in->linesize[0], inlink->w, inlink->h, s->luma_strength); |
| if (s->chroma_strength > 0) { |
| filter(s, out->data[1], out->linesize[1], in->data[1], in->linesize[1], cw, ch, s->chroma_strength); |
| filter(s, out->data[2], out->linesize[2], in->data[2], in->linesize[2], cw, ch, s->chroma_strength); |
| } |
| } else { |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| av_frame_free(&in); |
| return AVERROR(ENOMEM); |
| } |
| av_frame_copy_props(out, in); |
| |
| if (s->luma_strength > 0) { |
| filter(s, out->data[0], out->linesize[0], in->data[0], in->linesize[0], inlink->w, inlink->h, s->luma_strength); |
| } else { |
| av_image_copy_plane(out->data[0], out->linesize[0], in ->data[0], in ->linesize[0], inlink->w, inlink->h); |
| } |
| if (s->chroma_strength > 0) { |
| filter(s, out->data[1], out->linesize[1], in->data[1], in->linesize[1], cw, ch, s->chroma_strength); |
| filter(s, out->data[2], out->linesize[2], in->data[2], in->linesize[2], cw, ch, s->chroma_strength); |
| } else { |
| av_image_copy_plane(out->data[1], out->linesize[1], in ->data[1], in ->linesize[1], inlink->w, inlink->h); |
| av_image_copy_plane(out->data[2], out->linesize[2], in ->data[2], in ->linesize[2], inlink->w, inlink->h); |
| } |
| |
| if (in->data[3]) |
| av_image_copy_plane(out->data[3], out->linesize[3], |
| in ->data[3], in ->linesize[3], |
| inlink->w, inlink->h); |
| av_frame_free(&in); |
| } |
| |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, |
| AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, |
| AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, |
| AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, |
| AV_PIX_FMT_YUVA420P, |
| AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, |
| AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, |
| AV_PIX_FMT_YUV440P10, |
| AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12, |
| AV_PIX_FMT_YUV440P12, |
| AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14, |
| AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, |
| AV_PIX_FMT_NONE |
| }; |
| AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
| if (!fmts_list) |
| return AVERROR(ENOMEM); |
| return ff_set_common_formats(ctx, fmts_list); |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| int i, j; |
| OWDenoiseContext *s = inlink->dst->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| const int h = FFALIGN(inlink->h, 16); |
| |
| s->hsub = desc->log2_chroma_w; |
| s->vsub = desc->log2_chroma_h; |
| s->pixel_depth = desc->comp[0].depth; |
| |
| s->linesize = FFALIGN(inlink->w, 16); |
| for (j = 0; j < 4; j++) { |
| for (i = 0; i <= s->depth; i++) { |
| s->plane[i][j] = av_malloc_array(s->linesize, h * sizeof(s->plane[0][0][0])); |
| if (!s->plane[i][j]) |
| return AVERROR(ENOMEM); |
| } |
| } |
| return 0; |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| int i, j; |
| OWDenoiseContext *s = ctx->priv; |
| |
| for (j = 0; j < 4; j++) |
| for (i = 0; i <= s->depth; i++) |
| av_freep(&s->plane[i][j]); |
| } |
| |
| static const AVFilterPad owdenoise_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = filter_frame, |
| .config_props = config_input, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad owdenoise_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_owdenoise = { |
| .name = "owdenoise", |
| .description = NULL_IF_CONFIG_SMALL("Denoise using wavelets."), |
| .priv_size = sizeof(OWDenoiseContext), |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .inputs = owdenoise_inputs, |
| .outputs = owdenoise_outputs, |
| .priv_class = &owdenoise_class, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
| }; |
